If you instrument your pages to measure the user experience points that you care about most you will get MUCH more actionable results and can measure the performance from your actual users in the field.<br><br><a href="http://blog.patrickmeenan.com/2013/07/measuring-performance-of-user-experience.html" onclick="try{if(_gaq!=undefined){_gaq.push(['_trackEvent','Outbound','Click','Tip.UserTiming']);}}catch(err){}" target="_blank">More details are available here</a>.
